Fountain-pen.



w. T. K. CALTON.

FOUNTMN PEN.

APPLICAT ION FILED NOV. I0. 191?.

Patented Feb; 26, 1918.

WILLIAM THOMAS KENNETT CALTGN, or Lon'non, ENGLAND.

roUnrAIn-rniv.

Specification of Letters Patent.

Patented Feb. as, rare.

Application filed November 10, 1917. Serial No. 201,348.

To all whom it may concern:

Be it known that I, WILLIAM THOMAS Knnnnrr CAL'roN, a subject of His Majesty the King of England, and resident of London, Kingdom of England, have invented certain new and useful Improvements in and Gonnected with Fountain-Pens, of which the following is a specification.

This invention relates to fountain pens in which the nib is carried by a feed bar which is caused to reciprocate within the barrel or font by means of a rotary and non-slidable helically slotted sleeve and is fitted with a pin which extends through the helical slot into a straight longitudinal slot.

In the improved 'pen provided by the present invention an external gland or end plug is directly secured to the rear end of the barrel or font, the sleeve is wholly contained within said gland or end-plug, and a straight longitudinal groove is formed in the gland or end plug. By this means the operating parts do not trespass upon the ink font, enabling the full capacity of the latter to be used asa reservoir for ink and avoiding corrosion of said parts.

The invention will now be described with reference to the accompanying drawings, in

e which 2-- Figure 1 is a partly sectional elevation of a fountain pen embodying the invention;

Fig. 2 is a partly sectional elevation of the nib controlling mechanism and the gland or plug detached from the barrel, and

Fig. 3 is a transverse section on the line 3-3 of Fig. I.

In the construction shown the nib a and an ink feeding element 7) are fitted in a substantially cylindrical slotted or perforated enlargement or stopper 0 which is fitted or formed on the front end of a feed bar 03' and is adapted to be reciprocated within the barrel or font 0 of the pen, and when projected in the manner hereinafter described, prefertill ably to seal the nozzle or front end of the barrel by means of its beveled end f seating on a beveled shoulder 9 formed on the barrel.

An open ended gland or plug b has one of its ends a" screwed into or otherwise'fitted.

in the rear end of the barrel e and its in terior face formed with a straight longitudinal groove 7''. A sleeve 72: rotatably mounted and wholly contained within the gland or plug h, is provided with a flange Z at its front end adapted to butt against the inner end of said gland or plug, is formed with a longitudinal helical slot m, and has its rear end formed or fitted with a reduced shank n. The rear end of the feed bar cl is slidably mounted in the sleeve 7c and is provided with a transverse pin or projection 0 one end of which projects through the slot m in the sleeve into the straight groove jin the gland or plug h. A cork, india-rubber or other washer 79 is fitted around the shank n of the sleeve 70 and within the rear end of the gland or plug it, and an operating ring When the operating ring or cap 9 isturned. it causes the sleeve is to rotate in the gland or plug it and, owing to the engageaent of the pin or projection 0 on the feed rod (Z with the slot at in said sleeve, said rod is caused to move axially and thus project the nib or out of the barrel 6 into the writing position, as indicated by dotted lines in Fig. 1, said rod being prevented from rotation with the sleeve by the engagement of the end of the pin or projection 0 with the straight groove j in the gland or plug.

It will be appreciated that owing to the location of the sleeve 7:: completely within the gland or plug it, the ink containing capacity of the barrel 6 is increased, the barrel is not weakened by having to be internally grooved, a small amount of material is required to manufacture the parts as the sleeve does not extend well into the barrel, and as the sleeve is operated within the gland or plug, it and the feed bar at are not liable to become clogged with sediment. It will be observed that the flange Z which is provided at the front or inner end of the sleeve k and fits against the inner or front end of the gland b, constitutes in effect the bottom of the font or ink reservoir, closin the inner or front end of the groove 9' and preventing the ink from escaping down between the leeve and the gland. Upon reference to Fig. 2, it will be noted that by unscrewing the gland or plug it from the barrel, the feed bar (Z, the stopper 0, the nib a, as well as all the working parts contained within the gland or plug, are carried thereby as a unit'out of the barrel or font and lllltl may be replaced. and applied in the same 7 manner. There is nothing within the bar- 7 rel or font to obstruct or interfere with the removal or insertion of the said parts.

'A comparison between the length .of the "font or barrel and the length of the gland or plug, shows that the latter isless than one-third the length of the former.

What I claim is '1. A fountain pen comprising a barrel having a sealing shoulder at one end and internal threads at its opposite end, said barrel being of substantially uniform diameter from the threaded end to a'point adjacent the seal ng shoulder, an external o gland having its inner end externally threadedto engage the threads of the barrel and 7 projecting within the latter, a rotary and nonslidable sleeve mounted and wholly contained Within said gland, an annular flange its other end received within said sleeve and connected therewith so as to be reciproeated bythe rotary movement of the sleeve, and

copies .of thiscpatent may be obtained for means provided on and closing the outer end of the gland and connected with the sleeve for rotating the same, said means serving to hold said flange in its abutting relation.

A fountain pen comprising a barrel constituting the ink reservoir, an external gland directly secured to the rear end of said barrel, a rotary and nonslidable helically slotted sleeve mounted and wholly contained within said gland, a straight longitudinal groove formed in the gland, an annular flange on the inner end of said sleeve abutting the inner end of said gland and closing said groove, a reciprocal'ory feed bar formed with a perforated enlargement carrying the nib and an ink feeding element and adapted to coact'with the sealing shoulder in the barrel, a pin secured to said feed bar and extending through the helical slot into said straight groove, a shank on the rear end of the sleeve, an operating ring secured to said shank and bearing against and closing the rear end of the gland, and a washer interposed within the rear end of the gland and between the latter and said ring, said ring serving to hold the flange in its abutting position.

In testimony whereof I have hereunto signed my name.

' WILLIAM THOMAS KENNETT CALTON.

five cents each, by addressing the "Commissioner of Patentn.

Washington, 11.0. 

